UI elements are not being stretched

I’m currently modifying viewitem.svgz and I just discovered that TOP,BOTTOM,LEFT,RIGHT parts of the image are not being stretched. Instead programmers decided to use tiling method

This how it looks in inkscape

Looks fine if elements are small

but problems is when ui elements are bigger


Devs ,can you add support for some new ID tag in svg like
HOVER-RIGHT-STRETCH

So Plasma could apply stretching instead of default tiling.

The same problem with tasks.svgz

fun fact: Center is correctly stretched. LOL!

How am I supposed to create something more complex with that kind of bugs/limitation?
Now I see why ALL KDE plasma themes are so basic in design.